A 100 lb sack of potatoes falls from an airplane. As the velocity of fall increases, the air resistance also increases. When air resistance equals 100 lb, the acceleration of the sack will be ____ m/sec/sec.
A) 0
B) 16
C) 32
D) 9.8
E) 24

Question

Quizplus · Accepted Answer

When air resistance equals the weight of the object, the net force acting on the object becomes zero. According to Newton's second law, acceleration is directly proportional to net force. Therefore, if net force is zero, acceleration will also be zero.

A 100 Lb Sack of Potatoes Falls from an Airplane